Boiler furnace



W. J. DVORAK BOILER FURNACE June 3 S 1924.

Filed April 1-0 Patented June 3, 1924.

WENZEL J. nvoRAK, or sun'snr'nnienrs, TEXAS.

BOILER FURNACE.

To all whom it may concern:

Be it known that I,'WnNzE J. DVORAK, citizen of Czechoslovakia, residing at Sunset Heights, in the county of Harris and State of Texas, have invented certain new and useful Improvements in Boiler Furnaces, of which the following is a specification.

This invention relates to new and useful imrovementsin a boiler furnace.

no object of the invention is to provide a furnace formed of independent sections with expansion joints between them so that the walls of the furnace will not crack when- 1 subjected to varying degrees of temperature. a

' Another object of the invention is to provide a furnace of the character described havin hollow walls which will greatly retardt e transmission of heat, thus saving in fuel and reducing the heat in the boiler room. Y

Another object of the invention is to provide a; furnace of the character described whose walls are rein-forced andthe sections -.or parts thereof are securely tied together by the reinforcing rods'of the different parts, thus forminga very strong structure as well as a structure which can be cheaply, erected and readily repaired, and which will not crack owing to variations in heat.

With the above; and other objects in view the invention has particular relation to certain novel features of construction, arrangement of parts, and use, an example of which is given in this specification and illustrated in the accompanying drawings, wherein Figure 1 shows a fragmentary side elevation of the furnace. F igure 2 shows a fragmentaryhorizontal sectional view and,

Figure 3 shows a fragmentary end eleva tion.

In the drawings the numeral 1 designates as a corner column, and the numeral 2 designates one of the wall columns. Thesecolumns are formed of concrete and precast. They have suitable vertical reinforcing rods as 3, i, said rods being wrapped with reincc forcing wires 5, 5. These columns, when set in place, are tied together at the top and bottom by means of suitable tie rods as 6 and 7 which pass through the lower apertures 8 and 9, respectively. These tie rods have as the usual head at one end and being threadsection as 12 is constructed of a single thick- ;a sealing formed of ground fire brick and fire clay 21 which makes a tight joint and Application filed-April 10, 1923. Serial No. 631,082.

ed at the other end to receive a securing nut. These columns are tied together at their upper ends by-means of-angle' irons as 10 which are bolted thereto, t'hus' forming a suitable framework. The walls of the furnace are formed of sections, each section having a vertical air space as 11, preferably about two inches in width.- e outer part of each ness of common brick and at intervals,

vthrough this outer section, there are secur- -1ng rods as 13 whose ends project into apertures as 14:. provided in the columns 1 and 2 120 receive them. The inner part 15 of each section is spaced from said outer. part forming thespace 11 and is of considerable thickness and is built of fire brick. These sections have anchor rods as 16 which have projecting ends which fit into the apertures 17 in the respective columns so as to hold the inner sections 15 in proper position. The aligned inner sections 15 on either side of the wall are spaced from each other and from the intervening column 2, and

have opposing vertical channels providing 8 space for a'column of fire brick 18, and the end sections arealso spaced from the corner column 1, and from the adjacent end of the wall as 19 running at right angles thereto. Between the column 2 and the fire brick column 18 and between the ends of the bricks forming said column 18 and the wall sections there is asbestos as 20, and between the sections 15, 15- and 19, there is preferably yet admits a certain amount of expansion and contractlon. The outer sectlon 12 of the wall will not be subjected to any 'considerable variations in temperature and consequently will not be liable to crack while the inner section, being formed of independ ent units, will not be liable to crack because the units can expand and contract both lengthwise and vertically independent of each other, and there is sufficient space-left between the adjacent parts to permit this expansion and contracting without any rupture to the structure of the furnace.

What I claim is 1. A furnace including a framework consisting of upright concrete columns, means for anchoring said columns in fixed position relative to each other, an outer wall formed of sections havingtie rods whose ends pro- U? ject beyond the sections, apertures in the columns provided to receive said projecting ends, an inner wall spaced from the outer wall and formed of sections between said framework columns, said sections having anchor rods embedded therein which pro-- ject therefrom, and the framework columns having apertures-which receive said projecting ends of said anchor rods, the adjoining ends of said sections of said inside wall hav-' ing coinciding channels forming a Vertical space, and a column of fire brick in said space.

2. A furnaceincluding a framework consisting of upright concrete columns, means for anchoring said columns in fixed position relative to each other, an outer wall formed of sections having the rods whose ends pro-- ject beyond the s'ections,; apertures in the columns provided to receive said projecting ends, an inner wall spaced from an outer wall and formed of sections between said framework columns, said section's having anchor rods embedded therein which project therefrom, and the framework columns having apertures which receive said; rojecting ends of said anchor rods, the a joining ends of said sections of saidfinside wall having coinciding channels forming a vertical space, a column of fire brick in said space,

sealing material sealing the joints between"" 1 for anchoring said columns in fixed position relative to each other, an outer wall formed of sections having rods whose ends project beyond the sections, apertures in the col- I umns provided to receive said projecting ends, an inner wall spaced from an outer wall and formed of sections between said framework columns, said sections having anchor rods embedded therein which project therefrom, and the'framework columns having apertures which receive said projecting ends of said anchor rods, the adjoining ends of said sections of said inside wall having coinciding channels forming a vertical space,

a column of fire brick in said space, sealing,

material sealing the joints between the sections of the inside walls, and asbestos surrounding said column of fire brick.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

E. v. nmwii, W, H. Dummy. 

